GB816855A - Improved processes of manufacture of 4-bromo-4-nitrocarbanilide - Google Patents

Improved processes of manufacture of 4-bromo-4-nitrocarbanilide

Info

Publication number
GB816855A
GB816855A GB28256A GB28256A GB816855A GB 816855 A GB816855 A GB 816855A GB 28256 A GB28256 A GB 28256A GB 28256 A GB28256 A GB 28256A GB 816855 A GB816855 A GB 816855A
Authority
GB
United Kingdom
Prior art keywords
nitrocarbanilide
bromo
manufacture
improved processes
bromination
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB28256A
Inventor
Walter Hepworth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
Filing date
Publication date
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Publication of GB816855A publication Critical patent/GB816855A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C273/18—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of substituted ureas
    • C07C273/1854—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of substituted ureas by reactions not involving the formation of the N-C(O)-N- moiety

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

4-Bromo-41-nitrocarbanilide is prepared either by bromination of 4-nitrocarbanilide or by interaction of p-bromophenylurea and p-nitroaniline. The bromination is advantageously carried out in the presence of an inert diluent or solvent, e.g. acetic acid, either at ordinary temperatures, e.g. about 15 DEG to 25 DEG C., or at elevated temperatures, e.g. about 90 DEG to 95 DEG C. The interaction is also preferably carried out in an inert diluent or solvent, e.g. o-dichlorobenzene or acetic acid. Examples are given. Specification 816,856, [Group VI], is referred to.
GB28256A 1956-01-04 Improved processes of manufacture of 4-bromo-4-nitrocarbanilide Expired GB816855A (en)

Publications (1)

Publication Number Publication Date
GB816855A true GB816855A (en) 1959-07-22

Family

ID=1593309

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28256A Expired GB816855A (en) 1956-01-04 Improved processes of manufacture of 4-bromo-4-nitrocarbanilide

Country Status (1)

Country Link
GB (1) GB816855A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0531689A1 (en) * 1991-08-16 1993-03-17 Chemie Linz GmbH Process for the preparation of pure N,N'-asymmetrically substituted phenylureas

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0531689A1 (en) * 1991-08-16 1993-03-17 Chemie Linz GmbH Process for the preparation of pure N,N'-asymmetrically substituted phenylureas

Similar Documents

Publication Publication Date Title
OA03370A (en) Process for the preparation of 19-nor-4.9 (10) -steroids.
GB816855A (en) Improved processes of manufacture of 4-bromo-4-nitrocarbanilide
FR1179825A (en) Process for the preparation of alpha, beta-di- (arylazolyl) -ethylene derivatives
GB1072137A (en) Process for the manufacture of blue acid anthraquinone dyestuffs
GB824639A (en) Process of purifying maleic anhydride
FR1194406A (en) Process for the oxidation of hydrocarbons, in particular in the manufacture of phthalic acids
GB923738A (en) Novel steroid compounds and processes for the preparation thereof
CA528897A (en) Process of continuously sulfonating organic products by the use of sulfuric chloridrine
GB1012930A (en) 4-methyl-6-[2-formyl-propene-1-yl]-pyrone-(2) and a process for its manufacture
FR1192296A (en) Process for the production of oxygenates by reaction of earbone oxide and hydrogen with olefinic compounds
CA521644A (en) Stabilization of vat dye leucos at high temperatures
CA529322A (en) Concentration of organic acids
CA533337A (en) .DELTA.5.7-PREGNADIENE-3.beta.-OL-20-ONE ESTERS PRODUCED BY PYROLYSIS OF MALEIC ADDUCTS
GB770728A (en) Improvements in or relating to process for preparing 1-benzamido-1-phenyl-3-piperidinopropane
CA521502A (en) Process for the condensation of organic compounds
FR1200069A (en) Process for the preparation of alpha, beta-di- [aryloxazolyl- (2)] - ethylene compounds
CA547181A (en) Process for the manufacture of anthraquinone dyestuffs
FR1212713A (en) Process for the preparation of 16 alpha, 21-di-lower alkanoyl-oxy-11 beta, 17 alphadihydroxy-9 alpha-halo-2 alpha-methyl-4-pregnene-3, 20-diones
GB871198A (en) Pyruvic acid derivatives
GB841157A (en) Preparation of 1-phenylcyclohexane -1-hydroperoxide
FR1270507A (en) Process for the preparation of 17-hydroxysteroids by microbial oxidation
CH375344A (en) Process for the preparation of 1,4-pregnadienes
CA534551A (en) Electrochemical processes for the preparation of persulfuric acid and its compounds
FR1176941A (en) Process for the preparation of organic compounds which can be used in particular as intermediates for the preparation of dyes
AU217736B2 (en) 2, 4-dihalo-allopregnane compounds and process of preparing same